Sisters fight to save ancient African language from extinction

Hanna Koper, 95, and her two siblings thought to be last remaining speakers of N|uu and are working with linguists to preserve oldest surviving San language

A 95-year-old woman is helping a last ditch effort to preserve an ancient African language before it goes extinct.

Hanna Koper and her two sisters are thought to be the last remaining speakers of the San language N|uu, rated as critically endangered by Unesco. The San, also known as "bushmen", were the first hunter-gatherers in southern Africa.